Window-frame construction



April 10, 1928. 1,665,702

7 B. F. KEHRER ET AL WINDOW FRAME CONSTRUCTION Filed March 22, 1926 Ti --2 59 --1 29 [36 3 4 2., W 33 2a V q F: l v F 5. 2 6 24 j. Hzfrer A, /V. 5/629 (27 2 INVENTORS /0 ented Apr. 10, 192

UNITED STATES PATENT OFFICE.

BERTRAM F. KEHR-ER AND EDWARD I-I. BRETT, OF SEATTLE, WASHINGTON.

WINDOW-FRAME CONSTRUCTION.

This invention relates to the construction of window frames.

The principal objects of our invention are, first, to provide a window frame constructed ina manner to eliminate leakage beneath the sash enclosed by the frame; and, second, to provide a window frame which is adapted to be set into and connected to the wall of a building so as to prevent the passage of air and water about the frame and especially below the window sill.

More specific objects and advantages of the invention will appear in the following description.

The invention consists in the novel construction, adaptation and combination of parts hereinafter described and claimed.

In the accompanying drawing,-

Figure 1 is a detail side elevation, partly in section, illustrating an embodiment of our invention applied to a window-frame adapted for vertically movable sashes, said section being taken substantially on line 11 of Fig 2; Fig. 2 is a horizontal section on line 2-2 of Fig. 1; Fig. 3 is a perspective view of the sill member of the window frame; and Fig. 4 is a fragmentary rear elevation of the window frame showing the preferred manner of coupling the pulleystile and sill member of the frame. Fig. 5 is a transverse vertical section on line 55 of Fig. 6 illustrating the invention applied to a window-frame employing swinging sashes; and Fig. 6 is a sectional plan view of Fig. 5, the section being taken on line 66 of Fig. 5, the sashes being omitted from Fig. 6.

Referring now to Figs. 1, 2 and 3, a window frame includes a sill member 10 which is formed to provide in the top thereof a series of longitudinally disposed steps, four steps 12, 13, 1% and being shown. The top surfaces, or washes 12 13 14 and 15 of the respective steps being inclined to slope downwardly from the rear surface 16 toward the front surface 17.

The rear and front surfaces of the sill, as a whole, and the front surfaces 13 14 and 15 of the respective steps are disposed in vertical planes, or nearly so.

The ends of said sill are formed with Serial No. 96,438.

rectangular recesses to provide at each end a horn element 18 which protrudes beyond the planes of the end surfaces 19 of the rear portion of the sill. The width of said horns 55 is wider than the width of the lowermost step 12 to include a portion of the second step 13 which latter extends as a rib 20 along the top rear edges of the respective horns.

In the under side of the sill is a longitudinal groove 21 which is located transversely at the sill to have its rear side in a plane with the back surfaces 23 of the respective horns and into each of which horns the groove 21 continues as a rabbet 21 Said sill is provided in proximity of each of its ends with a transversely arranged groove or dado 24 which, in the embodiment illustrated in Figs. 1 to 4, inclusive, extends through the steps 14 and 15 down to a plane coextensive with the top surface 13 of the step 13.

Fitting within a dado 24: is the lower end of a side jamb, or pulley stile, 25 which stile is secured to the sill as by means of nails (not shown) driven upwardly through the sill as usual.

In the present invention, the above referred to securing means is supplemented by means of a dowel-pin 26 driven in a sub stantially horizontal direction into a hole, see Fig. 4, having complementary parts 27 in both the stile and sill.

The dowel-pin connection 26 is of advantage in that it serves to prevent the sill being forced downwardly from the stiles while being unsupported during the erection of a building as, for example, when lumber and other heavy material is placed upon the sill while being passed through the opening in the window frame.

A stile is provided at the inner side of the frame with a. vertical groove 28 to receive a strip 29, the protruding portion of which serves as a partingbead to cooperate with strips which are designated as the blind stop 30 and the inside stop 31 to provide channel: and 33 in which operate vertically n'iovable sash, not shown in the drawing. Seated upon the inner portion of the sill between the stiles 25 is a stool 36 which, in the construction exemplified in the window frame proper.

Figs. 1 and 2, is somewhat wider than the width of the sill step 15 and is formed in its underside with a rabbet having vertical and sloping surfaces 37 and 38, respectively, to fit against the sill surfaces 16 and 15 The width of said stool-rabbet, moreover, is equal to that of the step 15 whereby the surface 39 of the stool will be flush with the step surface 15 By thus disposing the seam between the stool surface 38 and the sill surface 15 above the plane of the stool surface or wash 14 leakage is prevented, especially when the innersash is lowered in its channel 33 to seatupon said wash 14 to entirely mask-the joint between the sill and stool above referred to.

The parts so far described with reference to Figs. 1 to 4, inclusive, and the horizontal frame head connecting the upper ends of the stiles, one'at each end of the sill, constitutes The frame head above referred to may be of any known or suitable form or construction and is not illustrated, as forming no part of the present invention. The window frame is set in an opening provided therefor in the wall of a building and between vertical and horizontal plate elements 34 and 35, respectively, of the wall framing.

After the window frame has been. inserted in place and suitably secured by being nailed to the wall structure, casings are applied to the inner and outer sides of the window frame.

The inner casing above the stool is indicated by 41, and 42 is the apron employed below the stool, said casing and apron, may be of any known or suit-able shapes or design and applied in a well known manner.

As shown in Figs. 1 and 2, at each side of the window frame, there is secured to the respective blind stop 30 a vertical board 43, hereinafter designated as the outer casing.

'The lower end of the board 43 is formed with two sloping surfaces and a rabbet 44 to fit snugly against the step surfaces 12 13 and 13 of the sill whereby the joint between the casing and sill is broken, so to speak, to obviate thepassage of water therethrough. i In completing the wall of a wooden building at the outside, rough boards 45, such as shiplap or an equivalent, is secured to the wall framing. the outer surface 46 of such boards being in a plane with the inner surface 23 of the respective sill-horn, sothat the covering boards. orsiding 47 may be secured to the shiplap in relative positions to have their tongues and rabbets interfit, and the tongue of the siding next below the sill arranged to have its tongue48 fit within the slot 21 and rabbet 21 provided therefor in the sill.

Furthermore, the rib 20 of the sill acts as a tongue with respect to the rabbet or groove of the siding member next above as represented with respect to the siding 47 in Fig. 5. It is to be noted that by the provision of the slot and rabbet 21 and 21 below the sill and with the rib 20 above the same, that non'leakable joints are provided between the sill and the siding and likewise between the sill and the outer casing.

In the embodiment of our invention shown in Figs. 5 and 6, for use with swinging sash or sashes, the construction is generally the sameas that hereinbefore described with respect to the elevating-sashes window frame.

The'parts which are similar are indicated by corresponding reference numerals inall of the views. a V

With the frame for a swinging sash or sashes, now being considered, the sill 10 is advantageously made without Iithe fourth step 15, the step 14 continuing to the rear surface 16 of the. sill as shownin Fig. 5 and the stool 36 seats upon the step 1.4;

The parting strip 29 is desirably made wider than those-used with an elevating sash and forms a jamb against which the swinging sash bears when closed.

In Fig. 5 we indicated by 50 a sash hung t0 swinging inwardly; and by 50 a sash adapted to swing outwardly with respect to a building. Both of these sashes 50 and50 may be used ina frame or either of them separately without the other.

Theconstruction, and the manner of assembling the parts of'our invention will, it is thought, be understood from theforegoing description.

While we have illustrated and described the invention as now preferred by us, we do notwish to be understood as limiting ourselves specifically thereto, as changes may be made without departing from the spirit of the invention within the scope of the follow-v ing claims.

What we claim, is,-

1.-In a window frame, a sill having its upper surface formed to provide a series of steps, each end of, said sill being formed to provide at the front thereof a horn element to protrude lengthwise of the sill beyond the ends of the rear portion of the sill, said horns being of a width to include all. of the lowermost step and a portion of the second step, said last named portion of the second step extending as a rib along the upper rear edge of the respective horns t0 the outer extremities thereof.

2. In a window-frame sill as defined in claim 1, in combination with a blind, stop seated upon the second step, and an outer casing fitting against said stop and having a rabbet in its lower end to furnish surfaces to seat upon the lower step and also upon said second step.

3. In a window-frame, a sill having its upper surface formed to provide a series of steps and a longitudinal groove provided in its under side, each end of said sill being formed to provide at the front thereof a horn elementto protrude lengthwise of the sill beyond the ends of the rear portion of the sill, said horns being of a width to include said groove, all of the lowermost step and a portion of the second step, said last named portion extending as a ri along the upper rear edge of the respective horns.

Signed at Seattle, Washington, this 19 day of January, 1926.

BERTRAM F. KEHRER. EDWARD H. BRETT. 

